Equation of motion of a point in space is x = 2t, y = -4t, z = 4t where t measured in hours and the co – ordinates

### Question Asked by a Student from EXXAMM.com Team

Q 1287312287.     Equation of motion of a point in space is x = 2t, y = -4t, z = 4t where t measured in hours and the co – ordinates of moving point in kilometers. The distance of the point from the starting point O (0, 0, 0) in 10 hours is
A

40 km

B

60  km

C

20 km

D

80 km

#### HINT

(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

#### Access free resources including

• 100% free video lectures with detailed notes and examples
• Previous Year Papers
• Mock Tests
• Practices question categorized in topics and 4 levels with detailed solutions
• Syllabus & Pattern Analysis